Miner&#39;s safety-lamp.



PATENTED AUG. 23, 1904.

, A. WIEDENFELD. MINERS SAFETY LAMP.

APPLIGATION FILED JAN. 6, 1904.

N0 MODEL.

To all whom, it may concern:

UNITED STATES fatented August 23, 1904.

PATENT OF ICE.

AUGUST W IEDENFELD, OF BOGHUM, GERMANY.

MINER S SAFETY-LAMP.

SPECIFICATION forming part of Letters Patent N 0. 768,497, a ed A gu 23, 1904.

Application filed January'B, 1904 Be it known that I, AUeUsT WIEDENFELD, a citizen of the German Empire, and a resident of Bochum, Westphalia, Germany, have invented certain new and useful Improvements in Miners? Safety-Lamps, of which the following is a specification.

My invention refers to a miners safetylamp in which the igniting device is shut off from the outside and where the burner-tube and the wick-tube are provided with slots forming a conduit from the place where the ignition is effected to the top of the burner. where the wick comes out.

The objects of my invention are, first, to obviate certain disadvantages adheringto the ignition devices heretofore in use-viz., the production of a spray of sparks passing the wire-gauze aptto becomea source of accidents and soiling the glass to the detriment of the illuminating value of the lamp; second, to reduce the probabilityof an undesired extinction of the flame.

My device is illustrated by the drawings herewith, in'which-- Figure l is a View of my lamp, partly in elevation and partly in section. Fig. 2 is a ground plan of the said lamp; Fig. 3, a front I View of the burner with the conduit aforementioned. Fig. 4 shows the position of the two slots composing the said conduitna mely,

a slot in the burner-tubeand another in the wick-tube adapted to permit the ignition of the wick, while Figs. 5 and 6 illustrate the normal position ofthe said slots. Figs. 7 and 8 show an elastic ring employed in my lamp, and Fig. 9 the wick-tube with a pin or bolt secured thereto.

My safety-lamp consists of a vessel 10, to which is soldered a cover 11, with'a 'brim' forming an annular rib with a thread on the outside for the receipt of a screw-ring 12. This ring holds the vertical bars 18, which are on their top held together by a flat ring 14:. In this'last-mentioned ring are riveted the lower ends of the bars 15, carrying the top lid or cap of the lamp. This framing, com- .posed as described, incloses a compartment Serial No. 187,860. (No model.)

' the aforesaid annular rib and covered by a cap 19 with a flat rim and a raised center 20, forming a hood the purpose of which will hereinafter appear. This cover carries a tu- 'bular glass cylinder. The said glass cylinder carries a wire-gauze 22, tightly pressed 'on through the aforesaid fiat ring 14 and the hoops 23 and 24:, the said hoop 23 being an annularstep placed by its middle horizontal portion upon the topof the said cylinder 21, the lower vertical portion embracing the brim of the cylinder and the upper portion receding somewhat, so as to fit into the orifice of the ring l t. The hoop 24: is elastic, and its shape is shown in reduced scale by Figs. 7 and 8 of the aforementioned drawings.

The essential part of my device is the construction and arrangement of the burner 25 and the tube for-the wick 26. In the-said burner there is provided a slot 27, which cominences at or near the top of the burner and terminates under the hood 20 in a round opening 28, assuming with the latter the form of a pan with a tail. The tube holding the wick has likewise a slot 29, which isequal in length to the slot 27. To the side of the said tube 26 containing the wick there is soldered a vertical pin 31,provided with a notch 30,by which it takes hold of a flat piece 35, embracing the burner-tube 26,turnable in said piece35. The said pin 31 has a rectangular bend below the said burner-tube, assumes then the form of a' quadrangular bolt 32, and settles in a small tube 38 in the bottom of the vessel, which a small tube can be turned by-meansof a lever 84, secured to and below the bottom of the lamp vessel. When the said four-cornered bolt and small tube are turned round, the

aforementioned flat piece 35 will have to fol' low this motion, which is, however, restrained by the stops 37 and 38 in the said flat piece. The spanks produced in the igniting-pan 17 by means of the aforesaid match take the way indicated in Fig. 1 by an arrow, pass the opening 28, and touch the wick immersed with benzene. The flame thus produced ascends through the slots, forming a conduit for the same, being in the position indicated by Figs.

2 and 4, and igniting the wick above, no mat ter how far the top of the burner may be placed over the igniting-pellet. hen the ignition has been elfected,the conduit should he at once the use of the lamp collecting under said hood and drivlng out the oxygen required for the darkening of the latter and, moreover, be apt i to cause small explosions and extinguish the flame altogether. The aforesaid piece 35 has, further, a threaded perforation 39, receiving a threaded bolt 40, which is supported by a small tube 41 and can be turned by a button 42. This provides for the adjustment of the height of the burner and that of the flame.

The lamp may be provided with a magnetic lock constructed by me to prevent its opening by unauthorized persons, as described and claimed in my Patent No. 749,123, dated January 5, 1904:.

The aforesaid paper match 18 is supplied with a turning-bolt provided with a worm and at its lower end, which is outside below the bottom of the lamp vessel, with a handle for turning and unwinding the paper match. This paper match may be of any well-known variety adapted to be ignited by friction, the matches being in the .form of a continuous web, carrying the fulminate.

Having now described my invention, what I claim as new, and desire to protect by Letters Patent, is-

1. In aminers safety-lamp a burner containing a wick-tube, both the said burner and the tube being each provided with a slot, the two slots being adjustable so as to form a conduit reaching to the top of the burner, an igniter, a compartment composed of the cover of the lamp vessel and a cap or hood covering said compartment-and separating it from the outside, said compartment containing said igniter and match in said compartment, substantially as set forth.

2. In a miners safety-lamp the combination of a burner containing a wick-tube, both the said burner and tube being each provided with a slot reaching to the top of the burner. an igniter, a compartment composed of the cover of the lamp vessel and a cap or hood cover ing the said compartment and separating it from the outside, said compartment containing said igniter, a match in said compartment, with a vertical pin quadrangled at its lower end and provided near its upper end with a notch a horizontal flat piece embracing the said wick-tube and engaging in the said notch in the said pin, a small tube in the bottom of the lamp vessel in which the said quadrangled end of the said pin engages, and a lever outside of the bottom of the vessel by which the This is necessary to avoid a passing 1 of the benzene-vapors into the hood 20 during said small tube, the said pin, the said llat piece and the said wick-tube, being all engaged one in the other, can be turned substantiall) as described and for the purposes as hereinabove set forth.

3. vIn a miners safety-lamp the coml )ination of a burner containing a wick-tube, both the said burner and tube being each provided with a slot reaching to the top of the burner, an flame, which would have as a consequence the igniter, and a compartment composed of the cover of the lamp vessel and a cap or hood covering the said com partmcnt and separating it from the outside, said compartn'ient eontaining said igniter, a match in said compartment, with a vertical pin, quadrangled at its lower end and provided near its upper end with a notch, a horizontal flat piece embracing the said wick-tube and engaging by the said notch in the said pin, the said fiat piece being provided with stops, a small tube in the bot tom of the lamp vessel in which the said quadranglcd end of the said pin engages, and a lever outside of the bottom of the vessel by 5 which the said small tube, the said pin, the said flat piece and the said wick-tube, being all engaged one in the other, can be turned as far as the said stops will allow, substantially as described and for the purposes hereinabove set forth.

4. In a miners safetylamp the combination of a burner containing a wick-tube, both the said lever and tube being each provided with a slot reaching to the top of the burner, an igniter, a compartment composed of the cover of the lamp vessel and a cap or hood covering the said compartment and separating it from the outside, with a vertical pin quadrangled at its lower end and provided near its upper end with a notch, a horizontal llatpiece embracing the said wick-tube and engaging by the said notch in the said pin, the said fiat piece being provided with steps, a small tube in the bottom of the lamp vessel in which the said quadrangled end of the said pin engages, a lever outside of the bottom of the vessel by which the said small tube, the said pin, the said flat piece and the said wick-tube, being all engaged one in the other, can be turned as far as the said steps will allow, and a paper match contained in the aforesaid compartment and supplied with a turning-bolt provided with a worm, the lower end of which bolt is outside the bottom below the lamp vessel and provided with a head or handle, substantially as described and for the purposes hereinabove set forth.

In witness whereof .I have hereunto signed my name in the presence of two witnesses.

AUGUST \VlEDENFELD.

Witnesses:

IVILLIAu Essnxwmx, LUDwIG vax DER LAAN. 

